发明名称 VERTIKAL PELARBRYTNING SOM FRAMSKRIDER UPPIFRAAN NEDAAT
摘要 The invention relates to a cut-and fill method of a mine, where the working is done by pillar working, which propagates vertically downwards. The working is done by placing the stope and the pillars interlaced with each other when propagating downwards. The pillars are made by the hardening fill-method and likewise, at the bottom of the excavated stope, in the lower corners, a bed of hardening fill is made.
申请公布号 SE469726(B) 申请公布日期 1993.08.30
申请号 SE19900001553 申请日期 1990.04.30
申请人 OUTOKUMPU OY 发明人 P S *SEPPAENEN;L-E *AARO;D R *LINDQVIST;K-E *MARTTALA;N E *EDEBLOM
分类号 E21C41/16;E21C41/22 主分类号 E21C41/16
代理机构 代理人
主权项
地址